Year	Number
2004-01-01	112
2005-01-01	159
2006-01-01	205
2007-01-01	248
2008-01-01	290
2009-01-01	313
2010-01-01	325
2011-01-01	378
2012-01-01	462
2013-01-01	592
2014-01-01	670
2015-01-01	779
2016-01-01	779
2017-01-01	779